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Future Internet 2010, 2(1), 60-73; doi:10.3390/fi2010060
Article

Dynamic QoS Evaluation of Multimedia Contents in Wireless Networks by “Double-Boomerang” Watermarking

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Received: 4 January 2010 / Revised: 2 February 2010 / Accepted: 2 March 2010 / Published: 8 March 2010
(This article belongs to the Special Issue QoS in Wired and Wireless IP Networks)
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Abstract

This work presents a cooperative network-aware processing of multimedia content for dynamic quality of service management in wireless IP networks. Our technique can be also used for quality control in UMTS environments, exploiting the tracing watermarking recently introduced in literature. In this work, we use the transmitted video-sequences to monitor the QoS in a videoconference call. The video-sequence of every active user travels on the communication link, one time as video (transparent mode), one time as watermark (hidden mode) describing a boomerang trajectory. The results obtained through our simulation trials confirm the validity of such approach. In fact, the advantages of distributing the management process are (i) an easier and more precise localization of the cause of QoS problems, (ii) a better knowledge of local situations, (iii) a lower complexity for a single QoS agent and (iv) an increase in possible actions.
Keywords: Quality of Service (QoS); wireless networks; 3G multimedia communications; network-aware processing; watermarking Quality of Service (QoS); wireless networks; 3G multimedia communications; network-aware processing; watermarking
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Benedetto, F.; Curcio, A.; Giunta, G. Dynamic QoS Evaluation of Multimedia Contents in Wireless Networks by “Double-Boomerang” Watermarking. Future Internet 2010, 2, 60-73.

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